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8700013 
Journal Article 
Continuous and batch distillation in an oldershaw tray column 
Silva, CM; Vaz, RV; Santiago, AS; Lito, PF 
2011 
45 
2 
106-113 
English 
Experiments are performed in an Oldershaw column with five sieve trays to separate cyclohexane/n-heptane under different modes of operation. The unit used comprises five perforated plates, a reboiler, a total top condenser using tap water as cooling fluid, a lateral condenser to remove distillate as liquid, and a solenoid valve to divide the vapor stream into reflux and distillate under the partial reflux mode. The total reflux simulation is carried out using the input specifications in two steps such as column charge and distillation at total reflux. The results show that the efficiency decreases slightly with increasing flows and the column efficiency measured at partial reflux is analogous to that obtained at total reflux. The results at infinite reflux and for the continuous rectification at partial reflux when compared with those obtained by Aspen BatchSep simulations give rise to relative deviations between 1.0 and 19.3%.